Patent SG-11201906905X-A (SG)
Title: Subnanometer-level light-based substrate cleaning mechanism
Inventor: RANDHAWA RUBINDER S
IPC: H01L21/02
Filed: 2018-02-05
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 August 2018 (09.08.2018) WIP0 I PCT omit IIl °nolo DID mil loons n110 oimIE (10) International Publication Number WO 2018/145001 Al (51) International Patent Classification: HO1L 21/67 (2006.01) H01L 21/02 (2006.01) (21) International Application Number: PCT/US2018/016860 (22) International Filing Date: 05 February 2018 (05.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/455,425 06 February 2017 (06.02.2017) US 62/518,311 12 June 2017 (12.06.2017) US (71) Applicant: PLANAR SEMICONDUCTOR, INC. [US/US]; 1759 South Main Street, Suite 120, Milpitas, Cal- ifornia 95035 (US). (72) Inventors: RANDHAWA, Rubinder S.; 3263 Cranbrook Place, Dublin, California, 94568 (US). CHRISTOV, Har- ry; 390 Darryl Drive, Campbell, California 95008 (US). (74) Agent: SCHEER, Bradley W. et al.; Schwegman Lund- Published: berg & Woessner, P.A., P.O. Box 2938, Minneapolis, Min- nesota 55402 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — of inventorship (Rule 4.17(iv)) — with international search report (Art. 21(3)) (54) Title: SUBNANOMETER-LEVEL LIGHT-BASED SUBSTRATE CLEANING MECHANISM W O 20 18/ 145 00 1 Al (57) : Various embodiments comprise apparatuses and related meth- ods for cleaning a substrate. In one embodiment, an apparatus includes a sub- strate holder to hold and rotate the substrate at various speeds. An optional inner shield and an optional outer shield, when in a closed position, surround the substrate holder during operation of the apparatus. Each of the inner shield and the outer shield can operate independently in at least one of rotational speed and direction from the other shield. At least one of a front-side laser and a back-side laser are arranged to clean one or both sides of the substrate and edges of the substrate substantially concurrently or independently by imping- ing a light onto at least one surface of the substrate. A gas flow, combined with a high rotational-speed of the shields and substrate, assists in removing effluents from the substrate. Additional apparatuses and methods of forming the apparatuses are disclosed. FIG. 6